An internal storage full of garbage is one of the most common reasons for a smartphone to slow down. When device memory comes to an end, the system begins to work with delays, and new applications refuse to install. Often, users do not even suspect that gigabytes of space are occupied by old media files in chats and archives of correspondence that have been accumulated in the database for years.
There are several effective ways to free up space, ranging from manually selecting unnecessary dialogs to radically resetting settings. The choice of a specific method depends on whether you want to save important contacts or plan to completely clean the gadget before selling it. In this guide, we will analyze all the current options for solving the problem.
Manually deleting correspondence in a standard application
The easiest and safest way is to use the built-in functionality of the application Google Messages or the system “dialer”. This method is ideal if you need to selectively delete dialogs with specific numbers or services, while retaining important information from your bank or work. The process takes only a few seconds if you know the correct sequence of actions.
First, open the messages application and find the conversation you want to destroy. Click on it and hold your finger until the selection checkmark or context menu appears. Depending on the version of the shell Android, the interface may differ slightly, but the logic remains the same.
After selecting one dialog, you can click on the trash can icon or the three dots in the upper corner of the screen to select the “Delete” option. If bulk clearing is required, simply continue highlighting other chats until you have selected all the ones you don't need.
- 🗑️ Click "Delete" in the confirmation menu that appears to permanently erase the selected threads.
- 📂 Check the Trash folder in the app settings, as deleted messages are often stored there for another 30 days.
- 🔄 To speed up the process, use the “Select All” function, if it is available in your software version.
⚠️ Attention: SMS and MMS deleted in this way cannot be restored using standard system tools. Before mass clearing, make sure that there are no confirmation codes or important addresses in the dialogues.
It is worth noting that deleting correspondence does not always free up space instantly if there were a lot of “heavy” attachments in the chat. The system may require time to re-index the file system. If the space is not freed up right away, try restarting the device.
Cleaning multimedia and attachments in messengers
The main amount of memory on modern smartphones is occupied not by text SMS, but by multimedia files in messengers like WhatsApp, Telegram or Viber. Photos, videos and voice messages can weigh gigabytes, and deleting them requires a separate approach, since they are stored in separate directories.
Most modern instant messengers have built-in storage management tools. For example, in WhatsApp you can go to Settings → Data and storage → Storage management. Here you will see a list of chats sorted by space, allowing you to quickly find the heavyweights.
Where are WhatsApp files physically stored on Android?
WhatsApp media files are usually located at /Android/media/com.whatsapp/WhatsApp/Media. However, access to this folder in new versions of Android (11 and higher) may be limited by system permissions, so it is better to use the built-in cleaning tools of the application itself.
Use the “Clear Chat” function if you want to delete the chat history, but leave the contact. In Telegram, you can use the Auto Delete function by setting a timer for 24 hours or 7 days for all new messages. This will prevent the accumulation of garbage in the future.
- 📸 Sort files by type (videos take up the most space) and delete the largest ones.
- ⏳ Set up automatic cache clearing in the settings of each messenger separately.
- 📤 Disable autosaving in gallery so that duplicates do not take up space in the system album.
Do not forget that clearing the application cache does not delete your personal correspondence, but only temporary files necessary for fast loading. This is a safe operation that can be performed regularly to maintain system performance.
Using Smart Storage and file managers
The operating system Android offers built-in tools for intelligent memory management, which are often ignored by users. The Smart Storage feature (or "Smart Storage" depending on the localization) allows you to automatically delete old backup copies of messages and unused applications.
To activate this feature, go to Settings → Storage → Smart Storage. Here you can set a rule, for example, delete photos and videos older than 60 days or clear messages if less than 25% of the memory is free. This is an excellent preventive method of dealing with overflow.
An alternative method is to use third-party file managers, such as Files by Google or Total Commander. These applications allow you to see your folder structure in more detail and find hidden files that are not shown in the standard gallery. You can find the folder SMS or MMS in the root of the system and clear its contents.
When working with file managers, be extremely careful. Deleting system files or databases may cause the messaging app to not work properly. Always check the file path before destroying it.
- 🔍 Use file extension search (e.g. .jpg, .mp4) to find all media on the system.
- 📁 Back up important files to a cloud drive before manually cleaning folders.
- 🧹 Regularly run the built-in storage analyzer to find duplicates.
⚠️ Attention: Some file managers require special permissions to access Android system folders. Grant rights only to verified applications from the official store Google Play.
Bulk deletion via computer (ADB and backups)
For advanced users who need to delete thousands of messages at once, the most effective method is to use a computer and interface ADB (Android Debug Bridge). This method allows you to manage the message database directly, bypassing the restrictions of the smartphone interface.
The first step is to enable USB debugging in the “For Developers” menu on the phone. Then connect your device to PC and install ADB platform tools. This method requires care because it is a command line operation.
adb pull /data/data/com.android.providers.telephony/databases/mmssms.db backup_sms.dbThe above command creates a backup copy of the message database on your computer. This is a critical step if you are afraid of losing important information. After creating a backup, you can proceed to cleaning.
☑️ Preparing to work with ADB
For direct removal, you can use SQL queries via ADB shell if the device has root access, or use specialized software like Android Messages for Web in conjunction with browser extensions for mass deletion. However, standard ADB does not always allow you to directly modify system databases without superuser rights.
A safer option for a PC is to use official companion apps from manufacturers (Samsung Smart Switch, Xiaomi Mi PC Suite). They allow you to manage messages, make backups and delete large amounts of data through a convenient graphical interface.
| Method | Required rights | Complexity | Risk of data loss |
|---|---|---|---|
| Manual deletion | No | Low | Minimum |
| Smart Storage | No | Low | Medium (automatic) |
| File Manager | File Access | Medium | High (user error) |
| ADB / Root | Root / ADB | High | Critical |
Radical method: Reset to factory settings
If your goal is to completely clean the phone, for example, before selling or transferring to another person, then the only guaranteed way to delete all messagescontacts, photos and applications is Hard Reset. This process returns the device to its out-of-the-box state.
Before starting the procedure, be sure to create a full backup of your data in your account Google or on external storage. After the reset, it will be impossible to recover deleted SMS without a preliminary backup by any means.
To perform a reset, go to Settings → System → Reset settings → Erase all data (factory reset). The system will warn you about the consequences several times. You will need to enter your unlock PIN or account password to confirm.
Before selling your phone, be sure to remove the SIM card and microSD memory card so as not to lose personal data or transfer it to a new one owner.
The process takes from 5 to 15 minutes depending on the amount of memory and speed of the drive. During this time, the phone may reboot several times. Do not interrupt the process or remove the battery if it is removable, so as not to damage the file system.
⚠️ Attention: After a factory reset, FRP (Factory Reset Protection) settings may require you to enter the password for the last synchronized Google account. Make sure you remember your login details.
Overflow prevention and cloud solutions
To prevent the problem “how to delete all android messages” from arising in the future, it is advisable to reconsider the approach to data storage. A modern ecosystem allows you to automatically synchronize SMS with the cloud, freeing up local device space.
Service Google One and the standard backup function allow you to store the history of correspondence in the cloud. You can configure local copies of old messages to be automatically deleted after they have been successfully synced. This strikes a balance between history availability and free space.
It is also recommended to regularly check the list of applications that have access to your messages. Often old, unused apps continue to hang in the background and accumulate cache. Removing such applications is a good habit for maintaining system health.
Regular synchronization with the cloud and setting up auto-delete of media files in instant messengers will save you from the need to manually clear memory in the future.
Use cloud storage not only for photos, but also for documents received through instant messengers. Many services, such as Dropbox or Yandex.Disk, have functions for automatic downloading and subsequent deletion of local files after download confirmation.
Is it possible to recover deleted SMS without root access?
Restoring messages without superuser rights is extremely difficult. Standard Android tools do not have an SMS recycle bin (although some shells like Samsung or Xiaomi may have such an option for 30 days). Third-party applications from the Play Market do not have access to the system database for deep scanning of deleted memory sectors.
Do text SMS take up a lot of space?
One text message weighs negligible (several bytes). However, if you have tens of thousands of them, they can take up several megabytes. The main problem is created by MMS (multimedia messages) with photos and videos, which can take up gigabytes of space.
Is it safe to use cleaner applications?
Using popular cleaners from well-known brands (for example, Files by Google) is safe. However, you should avoid dubious applications that promise “RAM speed” or “CPU cooling”, as they often contain aggressive advertising and collect personal data.
What to do if messages are not deleted?
If an error occurs when trying to delete, try clearing the Messages app cache in the application settings. Also, the problem may be in full memory - free up at least 100 MB so that the system can carry out the operation of writing changes to the database.